Create workflow to build image and publish it into Docker Hub #1

	name: Docker Image CI

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	permissions:
	id-token: write
	contents: read

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout the repository
	uses: actions/checkout@v4

	- name: Install Cosign
	uses: docker/setup-buildx-action@v2

	- name: Log in to Docker Hub
	uses: docker/login-action@v2
	with:
	username: ${{ secrets.DOCKER_HUB_USERNAME }}
	password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}

	- id: docker_meta
	uses: docker/metadata-action@v4.4.0
	with:
	images: ${{ secrets.DOCKER_HUB_USERNAME }}/btc
	tags: type=sha,format=long

	- name: Build and push Docker image
	id: build-and-push@v5
	with:
	context: .
	file: ./Dockerfile
	push: true
	tags: ${{ steps.docker_meta.output.tags }}

	- name: Sign the images with GitHub OIDC Token
	env:
	DIGEST: ${{ steps.build-and-push.outputs.digest }}
	TAGS: ${{ steps.docker_meta.outputs.tags }}
	run: \|
	images=""
	for tag in ${TAGS}; do
	images+="${tag}@${DIGEST} "
	done
	cosign sign --yes ${images}

	- name: Logout from Docker Hub
	run: docker logout

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